KR20090070513A - 반도체 소자 및 그 제조방법 - Google Patents
반도체 소자 및 그 제조방법 Download PDFInfo
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- KR20090070513A KR20090070513A KR1020070138544A KR20070138544A KR20090070513A KR 20090070513 A KR20090070513 A KR 20090070513A KR 1020070138544 A KR1020070138544 A KR 1020070138544A KR 20070138544 A KR20070138544 A KR 20070138544A KR 20090070513 A KR20090070513 A KR 20090070513A
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- insulating layer
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- well
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 16
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 210000000746 body region Anatomy 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000002513 implantation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7816—Lateral DMOS transistors, i.e. LDMOS transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41766—Source or drain electrodes for field effect devices with at least part of the source or drain electrode having contact below the semiconductor surface, e.g. the source or drain electrode formed at least partially in a groove or with inclusions of conductor inside the semiconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42364—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
- H01L29/42368—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity the thickness being non-uniform
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66681—Lateral DMOS transistors, i.e. LDMOS transistors
- H01L29/66689—Lateral DMOS transistors, i.e. LDMOS transistors with a step of forming an insulating sidewall spacer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66681—Lateral DMOS transistors, i.e. LDMOS transistors
- H01L29/66696—Lateral DMOS transistors, i.e. LDMOS transistors with a step of recessing the source electrode
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims (10)
- 반도체 기판 상에 형성된 제1 도전형의 웰;상기 제1 도전형의 웰 내에 형성된 제2 도전형의 body 영역;상기 body 영역의 표면에 형성된 제1 도전형의 소스 영역;상기 제1 도전형의 웰의 표면에 형성된 제1 도전형의 드레인 영역;상기 제1 도전형의 소스 영역과 제1 도전형의 드레인 영역 사이에 배치된 필드 절연층; 및상기 필드 절연층 상에 형성된 게이트 전극이 포함되고,상기 제1 도전형의 소스 영역은 상기 제1 도전형의 드레인 영역 보다 낮은 위치에 형성되는 반도체 소자.
- 제 1항에 있어서,상기 필드 절연층은 일부가 선택적으로 식각되어 제1 두께와 상기 제1 두께보다 두꺼운 제2 두께를 가지며, 상기 제1 두께로 형성된 필드 절연층 및 상기 제2 두께로 형성된 필드 절연층 상에 상기 게이트 전극이 형성되는 반도체 소자.
- 제 1항에 있어서,상기 소스 영역의 상면은 상기 필드 절연층의 하면과 동일한 높이에 형성되는 반도체 소자.
- 제 1항에 있어서,상기 제1 도전형의 소스 영역의 일측에 형성된 제2 도전형의 소스 콘택 영역이 포함되는 반도체 소자.
- 제 1항에 있어서,상기 제1 도전형의 웰의 하측에 제1 도전형의 매몰층이 형성되는 반도체 소자.
- 반도체 기판 상에 제1 도전형의 웰을 형성하는 단계;상기 제1 도전형의 웰이 형성된 반도체 기판 상에 필드 절연층을 형성하는 단계;상기 필드 절연층을 선택적으로 식각하는 단계;상기 필드 절연층의 일측에 제1 도전형의 불순물 이온을 주입하여 드레인 영역을 형성하고, 상기 선택적으로 식각된 필드 절연층을 통해 제1 도전형의 불순물 이온 및 제2 도전형의 불순물 이온을 주입하여 상기 선택적으로 식각된 필드 절연층의 하측에 제2 도전형의 body 영역과 상기 제2 도전형의 body 영역의 표면에 형성된 제1 도전형의 소스 영역을 형성하는 단계; 및상기 필드 절연층 상에 게이트 전극을 형성하고 상기 제2 도전형의 body 영역 상측의 필드 절연층을 제거하는 단계가 포함되는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 제1 도전형의 소스 영역은 상기 제1 도전형의 드레인 영역 보다 낮은 위치에 형성되는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 소스 영역의 상면은 상기 필드 절연층의 하면과 동일한 높이에 형성되는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 제1 도전형의 소스 영역의 일측에 제2 도전형의 소스 콘택 영역을 형성하는 단계가 더 포함되는 반도체 소자의 제조방법.
- 제 6항에 있어서,상기 제1 도전형의 웰의 하측에 제1 도전형의 매몰층을 형성하는 단계가 더 포함되는 반도체 소자의 제조방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070138544A KR100947941B1 (ko) | 2007-12-27 | 2007-12-27 | 반도체 소자 및 그 제조방법 |
US12/248,141 US7944002B2 (en) | 2007-12-27 | 2008-10-09 | Semiconductor device and method for fabricating the same |
CNA2008101755910A CN101471377A (zh) | 2007-12-27 | 2008-11-07 | 半导体器件及其制造方法 |
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KR1020070138544A KR100947941B1 (ko) | 2007-12-27 | 2007-12-27 | 반도체 소자 및 그 제조방법 |
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KR20090070513A true KR20090070513A (ko) | 2009-07-01 |
KR100947941B1 KR100947941B1 (ko) | 2010-03-15 |
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US (1) | US7944002B2 (ko) |
KR (1) | KR100947941B1 (ko) |
CN (1) | CN101471377A (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20200079318A (ko) * | 2017-12-06 | 2020-07-02 | 씨에스엠씨 테크놀로지스 에프에이비2 코., 엘티디. | Ldmos 소자 및 그 제조 방법 |
Families Citing this family (3)
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CN104659095B (zh) * | 2013-11-25 | 2018-02-06 | 上海华虹宏力半导体制造有限公司 | 一种射频ldmos器件及其制造方法 |
JP6339404B2 (ja) * | 2014-04-10 | 2018-06-06 | 旭化成エレクトロニクス株式会社 | 半導体装置の製造方法及び半導体装置 |
CN107492497A (zh) * | 2016-06-12 | 2017-12-19 | 中芯国际集成电路制造(上海)有限公司 | 晶体管的形成方法 |
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US4290078A (en) * | 1979-05-30 | 1981-09-15 | Xerox Corporation | High voltage MOSFET without field plate structure |
US4561168A (en) * | 1982-11-22 | 1985-12-31 | Siliconix Incorporated | Method of making shadow isolated metal DMOS FET device |
US6537899B2 (en) * | 1997-09-16 | 2003-03-25 | Sanyo Electric Co., Ltd. | Semiconductor device and a method of fabricating the same |
US6818950B1 (en) * | 2003-05-13 | 2004-11-16 | Micrel, Inc. | Increasing switching speed of geometric construction gate MOSFET structures |
US6946335B1 (en) * | 2004-11-24 | 2005-09-20 | Bcd Semiconductor Manufacturing Limited | Method of manufacturing improved double-diffused metal-oxide-semiconductor device with self-aligned channel |
KR100684428B1 (ko) | 2004-12-29 | 2007-02-16 | 동부일렉트로닉스 주식회사 | 낮은 온저항을 갖는 고전압 트랜지스터 및 이의 제조 방법 |
JP3897801B2 (ja) * | 2005-08-31 | 2007-03-28 | シャープ株式会社 | 横型二重拡散型電界効果トランジスタおよびそれを備えた集積回路 |
KR100628250B1 (ko) * | 2005-09-28 | 2006-09-27 | 동부일렉트로닉스 주식회사 | 전력용 반도체 소자 및 그의 제조방법 |
KR100649867B1 (ko) * | 2005-12-14 | 2006-11-27 | 동부일렉트로닉스 주식회사 | 고전압 반도체소자 및 그 제조방법 |
US7554154B2 (en) * | 2006-07-28 | 2009-06-30 | Alpha Omega Semiconductor, Ltd. | Bottom source LDMOSFET structure and method |
KR100871550B1 (ko) * | 2006-12-20 | 2008-12-01 | 동부일렉트로닉스 주식회사 | 반도체 소자 및 그 제조방법 |
US7625787B2 (en) * | 2007-08-31 | 2009-12-01 | Sharp Laboratories Of America, Inc. | Thin silicon-on-insulator high voltage transistor with body ground |
JP5329118B2 (ja) * | 2008-04-21 | 2013-10-30 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | Dmosトランジスタ |
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- 2007-12-27 KR KR1020070138544A patent/KR100947941B1/ko active IP Right Grant
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- 2008-10-09 US US12/248,141 patent/US7944002B2/en active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20200079318A (ko) * | 2017-12-06 | 2020-07-02 | 씨에스엠씨 테크놀로지스 에프에이비2 코., 엘티디. | Ldmos 소자 및 그 제조 방법 |
US11309406B2 (en) | 2017-12-06 | 2022-04-19 | Csmc Technologies Fab2 Co., Ltd. | Method of manufacturing an LDMOS device having a well region below a groove |
Also Published As
Publication number | Publication date |
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US20090166763A1 (en) | 2009-07-02 |
US7944002B2 (en) | 2011-05-17 |
CN101471377A (zh) | 2009-07-01 |
KR100947941B1 (ko) | 2010-03-15 |
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